I suspect that the usage patterns of the PojoCaches is different from the TreeCache; i.e. the PojoCache on 10.6.100.35 is under heavy load when it's asked to provide state. This is a tricky issue that we're working to resolve; see http://www.jboss.com/index.html?module=bb&op=viewtopic&t=78112 for a *long* discussion. Are you using READ_COMMITTED or weaker IsolationLevel? Perhaps moving to REPEATABLE_READ with a long state transer timeout will help. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3971137#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...